Air-brush.



PATENTED NOV. 28, 1905.

0.- LIBBRMAN.

AIR BRUSH.

APPLICATION FILED JUNE 10.1905* MMM Offro r 1155:

OSCAR LIBERMAN, OF PITTSBURG, PENNSYLVANIA.

AIR-BRUSH.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application led June 10, 1905. Serial No. 264,721.

To a/ZZ rah/in zizi www concern,.-

Be it known that I, OSCAR LIBERMAN, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Air-Brushes, of which the following is a quickly manipulated to paint or place small v quantities of fluid upon a picture, whether the picture be upon metal, wood, or the like material.

My invention aims to provide an air-brush wherein a suitable fiuid reservoir or receptacle is employed, together with a blast of air for spreading and spraying the iuid upon a picture or object. I also employ a reciprocating needle for splitting the blast of air and the discharge of fluid and have devised novel means for reciprocating and adjusting said needle during its movement.

The construction employed in carrying out the above objects will be hereinafter more fully described and then speciiically pointed out in the claims, and, referring to the drawings accompanying this application, like unmerals of reference designate corresponding p arts throughout the several views, in which- Figure 1 isa side elevation of my improved air-brush, partly in perspective. Fig. 2 is a vertical sectional view of the same, the airbulb being broken away. Fig. 3 is a perspective view of the air-brush. Fig. 4 is a detail side elevation view of a driven wheel employed to operate a portion of my improved air-brush. Fig. 5 is a top plan view of the same. Fig. 6 is a detail perspective view of the Huid-receptacle. Fig. 7 is a detail view of a pitman or oscillating link, and Fig. 8 is a detail sectional view of a portion of a block and the operating mechanism of the air-brush.

To put my invention into practice I construct my improved air-brush of a strong and durable metal comparatively light in weight. The-metal is bent or molded to form a casing 1, which is substantially rectangular in crosssection. The casing is constructed upon a curve, whereby it will serve functionally as a handle for the air-brush. The upper end of the casing or handle is enlarged upon its one side, as indicated at 2, to provide room for a portion of the operating mechanism of the brush. The upper end of the casing upon one side is provided with a substantially V- shaped spout 3, which forms a fluid-receptacle for the ink o r paint to be ejected upon a picture or design.

In the enlarged portion 2 of the casing I mount a strap or yoke 4, and between said strap and a plate 5, carried by the casing, I journal a shaft 6, having a cranked portion 7. Mounted upon the-shaft 6 .is a wheel S, which is provided with blades 9. In the upper end of the casing I mount a guid e-block 10, having vertically-disposed guid e-ribs 11 11. Between these guide-ribs I mount an adjustable block 12, carrying a guide-strip 14. The guide-strip 14 is connected lto a yoke 15 by a pin 16. The yoke 15 surrounds the strap 4 and has its lower end 17 pivotally connected, as indicated at 18, to a curved lever 19. The one end of said lever exten ds through an elougated opening or slot 20, formed in the edge of the casing, and this end of the levery is provided with a suitable button 21. The opposite end of the lever is pivotally connected, as indicated at 22, to the angularly-disposed arm 23 of a bar 24. This bar extends downwardly within the handle or casing and is pivotally connected to said casing, as indicated at 25, the shorter arm 26 of said bar being pressed by a spring 27, which is secured to the inner edge of the casing.

The block 10 upon its upper edge is provided with the guide 28, having a slot 29 formed therein. This guide is preferably made of wire conforming to an oblong link having parallel sides. Pivotally mounted between the guide-strip 14 and the block 12 is a pitman or oscillating member 30, which is preferably formed of`a small gage of wire that has the formation of an oblong link having its central portion twisted to form a loop at each end. The loop 31 of the oscillating member or pitman spans the cranked portion 7 of the shaft 6, while the loop 82 of the pitman extends upwardly over the guide 2S.

A partition 33, which separates the iiuidreservoir from the casing 1, is provided with a slot 84, through which extends a needle 35, having a minute sharpened end 36. This IOO IIO

needle extends through the reservoir formed by the spout 3, and the rear end of said needle is bent downwardly, as indicated at 37, and is adapted to pass through the loop 32 of the pitman 304 and the slot 29 of the guide 23.

In the end of the handle or casing 1 I mount a section of pipe 38, the iimer end of which is provided with a section of tubing 39, that is connected to a pipe 40, carried by the casing 1. This pipe has two branches 41 and 42, lthe branch 41 leading to the wheel 3, while the branch 42 extends upwardly alongside of the casing, across the top thereof, and outwardly through a slot 43, formed in a lid or cover 44, hinged, as at 45, to the casing 1. The end 46 of the branch 42 is contracted and bent downwardly to a point directly above the opening 47 of the fluid-reservoir. This end of the branch lies directly above the path of the needle 35, the object of which will be presently described. The casing 1 adjacent to the section of tubing 39 is provided with a bracket 48, against which the tubing 39 is adapted to rest. I preferably make this tubing of a resilient material, as rubber, and I provide the shorter arm 26 of the bar 24 with a bracket 49, adapted to engage the tubing, whereby the tubing can be pressed and the passage-way therein closed or partially closed, as desired. The outer end of the section of pipe 3S is connected to a hose 50, the other end of which is provided with a bulb 51, adapted to be pressed by the hand of an operator to force air through the hose 50, pipe 40, and its different branches.

The lid or cover 44 is slotted, as indicated at 52, to permit of a guide-arm 53 being used in connection with the air-brush and more particularly the needle 35. The guide-arm 53 is pivotally connected to the casing 1, as indiv cated at 54, and said arm extends upwardly through the slot 52 and then downwardly into close proximity to the needle 35, the bottom of the end of the arm being provided with a substantially V-shaped notch to embrace the needle 35 and prevent the same from moving upwardly when in operation.

Suitable means may be employed to secure the lid or cover 44 in engagement with the casing 1, whereby the contents of the reservoir or receptacle formed by the spout 3 cannot become displaced.

When my improved air-brush is to be used, the spout 3, which forms a ieservoir or receptacle for the fluid, is filled with ink, paint, or the fluid to be used to paint a picture. Vhen the operator presses upon the bulb 51 and air is injected into the pipe 40 a portion of the air passes through the branch 41 and revolves the bladed wheel 8. As the wl'eel revolves an oscillatory movement is imparted to the pitman 30, and as said pitman is movably connected to the needle 35 said needle will be reciprocated or moved back and forth within the reservoir or receptacle formed by the spout 3, each movement of said needle permitting a quantity of ink or paint to pass through the opening 47 of the spout 3. Simultaneously with the rotation of the wheel S a quantity of air is passing through the branch pipe 42 and is being ejected directly above the reciprocating needle point 36. This blast of air is split or interfered with by the reciprocation of the needle 35, this also being true of the ink or paint passing through the opening 47 of the spout 3. The blast of air will spread and spray the ink or paint that passes through the opening 47. The rapidity at which the needle may be reciprocated and also the amount of air which passes through the branch 42 may be governed by the operator pressing the bulb 5l. I have also provided the brackets 48 and 49 one of which is moved by the bar 24 and the lever .19, whereby the supply of air to the air-brush may be governed or entirely closed off when it is desired to stop the operation of the air-brush.

In connection with some characters of work it is essential to have a .perfect shading of the ink or paint being sprayed upon the picture or design, and in order that the spray of the air-brush may be regulated I have employed in connection with the lever 19 the yoke 15 and the movable block 12. When the operator is using the brush, the thumb of one hand is placed upon the button 21 of the lever 19, and bymanipulating this button the lever 19 maybe raised or lowered to move the yoke 15, consequently the block 12. By sliding the block 12 upon the block 10 the fulcrum-point of the pitman I30 is moved, either providing a longer er shorter stroke for the needle 35, which either causes more ink or.

paint to be carried without the reservoir or receptacle or a less quantity.

I have provided the air-brush with a substantially V-shaped spout owing to the fact that in some instances when the brush is being used for decorating china or pottery-ware considerable trouble is experienced in reaching some points to be decorated, and for this reason I have employed the spout 3, whereby easy access may be had to parts of designs diflieult to color.

It is evident froml the foregoing that the construction, operation, and advantages of the herein-described air-brush will be apparent without further description, and various changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

Vvvhat I claim, and desire to secure by Letters Patent, is*

1. An air-brush of the character described consisting of a casing, a spout carried by one end of said casing and forming a reservoir for a suitable fluid, a needle mounted in said spout and extending into said casing, a piv- IOO casing, a pipelocated adjacent to said reser- I 5 voir and adapted to be connected to a supply of air, a Wind-Wheel ournaled in stationary bearings to control said supply of air, means to reciprocate said needle, means to guide said needle, and means to adjust the stroke 2o of said needle, substantially as described.

In testimony whereof l affix my signature in the presence of two Witnesses.

, OSCAR LIBERMAN.

Witnesses.

E. E. POTTER, MARGUERITE WHITE, 

